Aimi Sasuki was just an ordinary 16-year-old girl passionate about music and dreamed of becoming Japan's next pop star. However, she fears auditioning for singing competitions due to stage fright and a lack of self-confidence. One day, Aimi suddenly was transported to another world. In this strange world, she could sing to help the people and creatures there. With newfound courage, Aimi embarks on a journey of self-discovery and adventure.